strange slowness of plot
I observed similar behavior with a Pentium III running NT4 SP6. For giggles, I tried the script in Splus; with lty = 2, the plotting was as fast as with lty = 1. But for lty = 3 and lty =4, the results were similar. Also, when the plot is being rendered, the system is completely tied up. Anne ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Anne E. York National Marine Mammal Laboratory Seattle WA 98115-0070 USA e-mail: anne.york at noaa.gov Voice: +1 206-526-4039 Fax: +1 206-526-6615 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
On Tue, 24 Jul 2001 apjaworski at mmm.com wrote:
I just ran into this strange behavior.
y <- rnorm(1000)
x <- seq(0, length=length(y))
plot(x, y, type='l', lty=1) - instantaneous
plot(x, y, type='l', lty=2) - 18s plotting lines + 15s plotting axes
= 33s
plot(x, y, type='l', lty=3) - 76s ,, + 75s
,, = 151s
plot(x, y, type='l', lty=4) - 40s ,, + 38s
,, = 78s
A couple of observations:
(1) The plots for lty>1 seem to be rendered in "one chunk", that is a blank
graphics window appears and stays blank until all the lines appear at once.
Then another long wait for axes.
(2) While waiting for the plot, the computer becomes totally unresponsive.
Typical ctr-alt-del does nothing. Even pushing the power button does
nothing. I originally attempted the lty=2 plot with several hundred
thousand observations. The only way I could get my machine back was to
disconnect the power cord!
My system is as follows:
(1) IBM Intellistation with PIII 1GHz, 512Mb of RDRAM, 20Gb SCSI160 drive,
64Mb FireGL graphics card
(2) Windows 2000 Pro
(3) R-1.3.0 (original version)
Andy
__________________________________ Andy Jaworski Engineering Systems Technology Center 3M Center, 518-1-01 St. Paul, MN 55144-1000 ----- E-mail: apjaworski at mmm.com Tel: (651) 733-6092 Fax: (651) 736-3122 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._
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